What is the work output of a heat engine whose thermal energy ...

[bobbysung]

What is the work output of a heat engine whose thermal energy input is 400 J and whose exhaust is 300 J?
 
  A) 200 J B) 400 J C) 700 J D) 100 J E) 300 J

Question 2

How is the sun situated in the universe?
 
  A) The sun is an isolated star that is far outside of all the galaxies in the universe, and is thus not part of any galaxy.
  B) The sun is just one of a large number of stars, and is located on the fringes of the Milky Way galaxy, which itself is just one galaxy among many galaxies.
  C) The sun is just one of many stars, and is located near the center of the rest of the stars in the universe.
  D) The sun is at the center of the universe.
  E) Earth is at the center of the universe, and the sun orbits around the earth.

[nathang24]

Answer to Question 1

D

Answer to Question 2

B

[bobbysung]

Excellent

[amandalm]

TYSM